Which system circulates blood throughout the body?

Which system circulates blood throughout the body?

• A. Muscular system
• B. Nervous system
• C. Circulatory system
• D. Endocrine system

Answer: (C)

The circulatory system is responsible for circulating blood throughout the body, which is essential for transporting oxygen, nutrients, hormones, and waste products to and from cells. The heart acts as the pump, while blood vessels, including arteries and veins, serve as the conduits for blood flow. This system plays a vital role in maintaining homeostasis and ensuring that tissues receive the substances they need for metabolism and function. In contrast, the muscular system is involved in movement and stability but does not circulate blood. The nervous system regulates body functions through electrical signals, facilitating communication between different parts of the body, but it does not circulate blood either. The endocrine system manages hormones and regulates various bodily functions through chemical signals but, similar to the other two systems, it does not have a direct role in blood circulation. The circulatory system's complex network is crucial for sustaining life, making it the correct choice for the system that circulates blood throughout the body.

The circulatory system is responsible for circulating blood throughout the body, which is essential for transporting oxygen, nutrients, hormones, and waste products to and from cells. The heart acts as the pump, while blood vessels, including arteries and veins, serve as the conduits for blood flow. This system plays a vital role in maintaining homeostasis and ensuring that tissues receive the substances they need for metabolism and function.

In contrast, the muscular system is involved in movement and stability but does not circulate blood. The nervous system regulates body functions through electrical signals, facilitating communication between different parts of the body, but it does not circulate blood either. The endocrine system manages hormones and regulates various bodily functions through chemical signals but, similar to the other two systems, it does not have a direct role in blood circulation.

The circulatory system's complex network is crucial for sustaining life, making it the correct choice for the system that circulates blood throughout the body.